Horse riding machine



FIG. 1 is a perspective view of a horse riding machine showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an exploded perspective view showing an unclaimed variation of the horse riding machine.

The broken lines shown are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

The ornamental design for a horse riding machine, as shown and described. 